title: Prevalence of Widal antibodies in apparently healthy human population.
mesh_terms: D000293:Adolescent; D000328:Adult; D000907:Antibodies, Bacterial / Q000302:isolation & purification*; D002353:Carrier State / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D010154:Pakistan; D012959:Socioeconomic Factors; D014435:Typhoid Fever / Q000276:immunology*; D014881:Water Supply
chemical_list: D000907:Antibodies, Bacterial